EXHIBIT 12 1996 Form 10-K The Southern New England Telephone Company Computation of Ratio of Earnings to Fixed Charges Dollars in Millions, For the Year Ended December 31, 1996 Income before income taxes $335.9 Add: Interest on indebtedness 45.2 Portion of rents representative of the interest factor 8.3 Earnings before fixed charges and income taxes (1) $389.4 Fixed charges Interest charges $ 52.4 Portion of rents representative of the interest factor 8.3 Fixed charges (2) $ 60.7 Ratio of earnings to fixed charges 6.42 [(1) divided by (2)]